.mark-nav {
  border-left: 1px solid #eee;
  a.head-nav-item {
    display: block;
    text-decoration: inherit;
    transition: all 0.2s;
    &.active {
      color: #007fff;
      border-left: 2px solid #007fff;
    }
    &:hover,
    &.active {
      background-color: #f8f8f8;
    }
  }
  a.nav-item-1 {
    color: #000;
    font-size: 1.2em;
    padding-left: 1em;
    font-weight: 400;
  }
  a.nav-item-2,
  a.nav-item-3,
  a.nav-item-4,
  a.nav-item-5,
  a.nav-item-6 {
    color: #333;
    font-size: 1em;
    padding-left: 2em;
    font-weight: 400;
  }
}
